French Onion Soup Recipe (Soupe à l’Oignon Gratinée)

Welcome to the Worldly Recipe! Today I am excited to share with you a comforting French recipe, Soupe à l’oignon. This is not just any French Onion Soup, this is a dish that holds a special place in my heart. So let’s get into what makes this soup so darn good, including a surprise ingredient that will kick the flavor up a notch.

French Onion Soup

A rich and comforting French Onion Soup made with deeply caramelized onions, homemade beef stock, toasted baguette, and melted Gruyère cheese.

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Prep Time 20 minutes mins

Cook Time 25 minutes mins

Total Time 45 minutes mins

Servings: 2

Course: French Onion Soup, Onion soup, Soup

Cuisine: French

Calories: 400

Ingredients Equipment Method Notes

Ingredients

  

For the Soup

• 2 yellow onions thinly sliced
• 25 g butter
• ½ tbsp vegetable oil
• ½ tbsp all-purpose flour
• 13 cl dry white wine
• 500 ml water
• salt to taste
• black pepper to taste

For the Topping

• 1 baguette or whatever you have
• 50 g Comté cheese grated

Equipment

• 1 large saucepan
• 1 Wooden spoon
• 1 knife
• 1 Cutting board
• 1 oven-safe soup bowls 2 bowls
• 1 grater for cheese
• 1 oven grill or broiler

Method

 

Step 1: Slice the Onions

1. Peel the onions.
2. Cut them in half.
3. Slice them into thin strips.

Step 2: Caramelize the Onions

1. Melt the butter with the oil in a saucepan over low heat.
2. Add the sliced onions.
3. Cook for about 15 minutes, stirring frequently, until soft and golden brown.

Step 3: Finish the Soup

1. Sprinkle the flour over the onions and stir for 1 minute.
2. Pour in the white wine and scrape up any browned bits from the bottom of the pan.
3. Add the water.
4. Season with salt and black pepper
5. Simmer uncovered for 10 minutes.

Step 4: Prepare the Bread

1. Toast the bread slices until crisp.

Step 5: Gratin and Serve

1. Divide the soup between two oven-safe bowls.
2. Place the toasted bread on top.
3. Cover generously with grated Comté cheese.
4. Broil for 3–5 minutes, or until the cheese is melted and golden.

Notes

• Yellow onions are the traditional choice for French Onion Soup.
• Caramelizing the onions slowly creates the soup's signature sweet flavor.
• Comté is traditional, but Gruyère or Emmental are excellent alternatives.
• For a richer flavor, substitute the water with beef or vegetable stock.
• Use a rustic baguette instead of sandwich bread for a more authentic texture.
• Serve immediately while the cheese is hot and bubbly.